Marion and Co., compiler · London : Marion and Co. · leaf 187
COMBINATION PRINTING. 157 It will be seen that, unlike other frames, this one has the back hinged to the frame, so that it cannot be … entirely removed. On the back there are two little punches, which work into corresponding holes in front of the frame. Now as to the working of the apparatus. To take an example : — It is desired to print a foreground from one negative together with a distance from another. Two similar frames are…